Branch HEAD

fix "rhel5 i686 patchless build failure"
b=19590
i=johann
i=brian

diff --git a/lnet/autoconf/lustre-lnet.m4 b/lnet/autoconf/lustre-lnet.m4
index ddfce23..dbbdc09 100644 (file)
--- a/lnet/autoconf/lustre-lnet.m4
+++ b/lnet/autoconf/lustre-lnet.m4
@@ -907,10 +907,22 @@ AC_SUBST(RALND)
 AC_DEFUN([LN_FUNC_DUMP_TRACE],
 [LB_CHECK_SYMBOL_EXPORT([dump_trace],
 [kernel/ksyms.c arch/${LINUX_ARCH%_64}/kernel/traps_64.c],[
-       AC_DEFINE(HAVE_DUMP_TRACE, 1, [dump_trace is exported])
-       AC_MSG_CHECKING([whether print_trace_address has reliable argument])
        tmp_flags="$EXTRA_KCFLAGS"
        EXTRA_KCFLAGS="-Werror"
+       AC_MSG_CHECKING([whether we can really use dump_stack])
+       LB_LINUX_TRY_COMPILE([
+               struct task_struct;
+               struct pt_regs;
+               #include <asm/stacktrace.h>
+       ],[
+       ],[
+               AC_MSG_RESULT(yes)
+               AC_DEFINE(HAVE_DUMP_TRACE, 1, [dump_trace is exported])
+       ],[
+               AC_MSG_RESULT(no)
+       ],[
+       ])
+       AC_MSG_CHECKING([whether print_trace_address has reliable argument])
        LB_LINUX_TRY_COMPILE([
                struct task_struct;
                struct pt_regs;